000 00224nam a2200085Ia 4500
008 160710s1952 xx 000 0 und d
245 _aELECTRONICS VOL. 25 OCT-DEC 1952
260 _aNEW YORK
_bMCGRAW HILL
_c1952
942 _2ddc
_cB
999 _c31100
_d31100